<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        p {
            font-size: 20px;
        }

        p::first-letter {
            font-size: 50px;
        }

        p::first-line {
            background-color: orange;
        }

        p::selection {
            background-color: skyblue;
        }

        div::before {
            content: '【';
            font-size: 30px;
            color: pink;
        }

        div::after {
            content: '】';
            font-size: 30px;
            color: pink;
        }
    </style>
</head>

<body>
    <div>Hello Hello How are you</div>
    <p>
        Lorem ipsum dolor sit amet consectetur adipisicing elit. Atque velit modi veniam nisi veritatis tempore laborum
        nemo ipsa itaque optio. Id odit consequatur mollitia excepturi, minus saepe nostrum vel porro.
    </p>
</body>

</html>